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Hydrodynamics as vs → c

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2024年6月25日

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  • Guy D. Moore

摘要

I present the simplest 3+1 dimensional quantum field theory for which the speed of sound can be arbitrarily close to the speed of light. Examining the hydrodynamics, I find cases where the shear viscosity is finite, but the “shear relaxation coefficient” appears always to be divergently large.